Method for producing lather by centrifugal action of fluid over a soap cake surface



Sept. 23, 1952 JOHNSON ETAL 2,611,649

. C. METHOD FOR PRODUCING LATHER BY CENTRIF'UGAL ACTION OF FLUID OVER A SOAP CAKE SURFACE Filed March 14, 1947 2 SHEETS-SHEET 1 FIE l.

A comm/v c. JOHNSON ALDEN 0. JOHN$0N Sept. 23, 1952 G. c. JOHNSON ETAL 2,611,549 METHOD FOR PRODUCING LATHER BY CENTRIFUGAL 7 ACTION OF FLUID OVER A SOAP CAKE SURFACE Filed March 14, 1947 2 SHEETS-SHEET 2 FIE E GORDON C. JOHNSON ALDEN 0. JOHNSON Patented Sept. 23, 1952 amnion For: P'ItonUe'mG I'J THER GENTRIFUGAL ACTION; on FLUID" OVER A SOAP CAKE SURF AQE' A 'Gtifiiiiiifll {unison and Alien 0. Johnsiin, Minne'a'polis',Minn assignors to J ohn Oster Manuratainng e tron at Wisconsin any, Racine, Wis., a corpora Ani licatitn man 1"4, 1947-,sei ia1Nt; $345533? 1?; This" invention relates to mechanilsinfl and method 'fdrp rodu'cingfsoap lather for shavin or w shl'ng purposes, and the prima y object is to pro (lea Iatner cr atingdispensr wnicn cfarries out the method" or process quickly" andefiiciently tothe end that a arm, nth iather'wiu be-made 'ataiiabie rtrtae usfe's'indic te'di Mo artieulany the et odincludes" the gof a ycake of soap 'aifd the'appn ation v V jof it's expeseasurface wnerebyeentnm'g "a ion*wi11 .causesu h Wateftb femove'; frfo'rh the s'oap cakefsui'face; fsu'f-t ficient amounts of the soap toproduce the 'de sired lather, and. to then agitatethe same to theiebycor'nplete the lather or' foa' rning Qpe'iatib' T presentinvnt en embe many of the ieatures and mechanicaii detaiis disclosed in oiir 'co-pendingf application Serial No". 587,692, filed April 11', 1945, fof LathfMachi nj 'a ridin which weighted s'ciap'efis' placed upon the soap ake mechanically scrape the" soap-from theea ae; For that reason reference-is made'wthat earlier 'afiiil'idation forsiuchstrueturm iatur'esasarenot hegel'n's'etfoith'or'disclosedindetail.

1 Theresent invention ciihtemplateslittlifiofe; from astructufm standpoint, re 51 f the weighted scra er; 60, ide'ii'hfied angiem: 1515316211 in the eariiratpncation; Ai'i'cl'fiihil' dill earlier structure and theory of operatiori'ifs 'ef'n cieiit," and the" scrape "fe'atu'f niay jwn cdfiti'nii to liUSH, We have foiifid that w h the rembval bf the scraper and with'f's'uif'alblecofitiol alljtit ments a substantial diiferentahdinore efilcieht I effect ispmduced. Not only is the soap film removed-bye different lifocss or action than previously anticipated, biitwe have also eliminated obj ectionable-gyratony vibrationswhich frequently resulted from absentee displacement of the loose 's c'rapei in the'sbapcupf i t y In the accompanying drav ngs; which illu'strate the present 'sti l'ict'iif'arid' the process of.

forming'lather thereby,

chine; taken diametrically through the lather ch arriber'tiand substantially in the plane represented by -Fig. 1 in the drawings'of outed-pending application Serial No. 587,692.

Fig.1 is a sectional elevationthroughthemalv Fig. 2 isa top or plan view of the machine with tractional parts. broken'away foi pflrpose Thisi no'z'z l'efis provided with-a vat/e 17153 which the flow of waten-deliveregl by the nozalemay be accurately aplj-ustedt In this manner ;the' motor 5 is operative, when enetg-ized; to deliver a con stagit supply of gheategli water from the reservoir Etc the nozzle I6, while also] and simultaneously actuating-the-lather producing'devic'e; as will-now beset-forth. I A i v sup er; 9 h m the e 1 f of a cup I 8 is rigidly; but-releasably-secuted upon the upper end of the shat-t1 H by'anutilt and ibi 91 915, s ec dp mmtt er s of'l'rthe e mbe E h w? willeme m w tated' ,by the motor shaft. Whi-le this cup may be modified in several particulars; as shown in our co pending application Serial- No; 587,692 the design here shown; comprises a A substantially fiat bottom from which; upwardly extend "a cy-llndri-- cal wall, open at itsupper endandadlaptedto receive and suppor ta; circular soap-massor cake. 20 rrlflii BXtBQiQlQSl1If3GGDf the cup 'wa'lliis pro vided with yertical flutes-or corrugationsil while the inwardly opposed wall of the chamberi's providedv with; somewhat similar: corrugations 22 which cooperate with the corrugation 21; when the cup is spun; to churn intoa lather thesoa'p solution so produced. r v

The device operates'to darryhiitthe mama of the present; invention as mmws With the" motor 5 energized'the shaft-10 operates-tofapicily-rotate the cup I8 With its supported soap mass 20 while also functioning to actuate the pump 10. The

ened and 'constricted prove the quality of the lather. V

" The centrifugal action; which pr'oduces the thin event, with the pump rotating and the chamber G heated, water is circulated :fromthe reservoir F to the nozzle [6 from which it descends -at proper temperature, and in such desired yolume as maybe determined by adjustment of the valve IT. A

As the restricted stream if water, leavesfthe nozzle IE it descends'into contact with the rapidly rotating soap body at a pointcoaxially thereof,

and, since the entire upper surface of-the: soap mass is entirely exposed, this water, under centrifugal action, is dispersed-radially in all directions, in a, thinsheet orfilm, 'Itisfound, by, extensive experiment, and jfte'sftiriglg' that ,'the ovement or filyd r hemn u suflicientl u. dissolves the soap to remove portions suffic en quantity to produce a lrichsoap solution.

The red (1 aeration isjprdduceibya duct, 23, through men :11 s' admittedunde'r atmospheric P e su pri r'is hu'sproduced fromthe ur a l Q eretat nsc n wal a d t isp maj y lather builds .up'fin the: chamber space above the sqap surfacei'until that sp'aceis filled, after which the latheresc'apes 'overjthe'1 rim of the cup and ithq ltjmebhanical assistance, and p in.

tionfas the same is agitated by the inner downwardly into'fthe rieri'ph'eral space between the cup wall and the chembepwau, f Here the .op-

pq d and e atiyel v eetqrru ations rr 21' and 22 againerrgag the: lather "to violently tim nQieE IetQ i e i 'ame ,ur alifina r of lather "w'i'thjmost desired consistency I and quality is producedli This churning action also of coursei'ncreases the volumefof lather, which, with the added pressure 'producedby'the initial or' in- 9 1 fi b sk ca s s h r su nt pr uct to feedin a fulland constant new 'j'Qut throughQthe only escape port, which is a nozzle 24, fromiwhich it" 'isdnyeniehuy icai'lght'f 1h the hand, fon: the brush; orin some receptacle, all ready'for use;

Reference 'has previouslybeen made to the cover "flanges and it"wil'l beseen from Figs; 1 and 3, 'that it's 'lowe'r edg'e projects inwardly toward the "cup lB." It will also be noted that the upper "edge of the mp1s mgr/iced with an out-turned flange-"25,offset upwardlywith 'respfect'ito the lower edge part of fl'arig'e 8. TIn'this'waythepassage of the lather from within the 'cup to the ct n rugated heaters "-(2 I -22) is somewhat lengthand" this 'isi foundzjto 1 m;

method" and fa" preferred mechanisrn 'by which the same may be practiced; what we claim is:

Thein'ethod: ofi 'producin'g 'lath'er which is chara'cterized b'y the steps "o fzf rotating 'a' cake "of soap having an exposed face which is subs'tantiallyzperpendicular'totheaxis of rotation: ad-

mitting air directly to the exposed face 'offthe soap cake'g-iforcibly injecting a, "stream of liquid onto said'fa'ceof the'soap substantially coaxially therewith'to thus enable-centrifugal force due'to Number rotation of V the soap to move the, liqui'd gradially outwardly across said facelof the s'o'apdn a thin film so that quantities of soap are dissolved in the e sojap' solution and to entrain air thereinsof as oin'itiate the formation of lather.

2.-,-'-T,he method of" producing lather which comprises the steps of rapidly rotating a cake of soap having an exposed surface normal to its axis; admitting air directly to the exposed surface of the soap cake applyingia small quantity of liquid to said surface of the soap, so that the liguid sjr ifl vaem .s su face 1 2 .ihi 1 9i. moving substantially v radially outwardly solve soap from said s rface; abruptly, defie the movin'g sheet of liquid as it leaves the ery .of the soap to cause it't'o re'bound back onto said surface to berecurrently..circi1lated thre; across to :increase the concentration of the "soap solution'and to 'entrain'airflin the solution to form is primar lather from the amiwheii t e; solutionereaches the properconcentrati'ori; and further agitating the primary lather soflformed, in the presencerof air, {to produce. lather of the desiredconsistency, I,"

3.,The metho'djof producing latherr..which..,is characterized by the steps of:' rotating a cakeof soap at high speed with an. exposed faceuthereof substantially perpendicular tion; admitting air direct the ,exposed.. face of the soap cake; supplying liquid to s'aid fa'ce of the soap to .thus enable centrifugal force con sequentto rotation of the soap to move the liqui'd which liquid having soap dissolved. ther ein is converted into primary latheri,

file,ofthispatent: a I a UNITED S TATES rPA'I'ENTS-u Number to the The following references are of record inthe FOREIGN-PATENTS 

